Imaging melamine in Egg samples by surface desorption atmospheric pressure chemical ionization tandem mass spectrometry
Article
Yang, SP, Chen, HW, Yang, YL et al. (2009). Imaging melamine in Egg samples by surface desorption atmospheric pressure chemical ionization tandem mass spectrometry
. Chinese Journal of Analytical Chemistry, 37(3), 315-318. 10.1016/S1872-2040(08)60088-2
Yang, SP, Chen, HW, Yang, YL et al. (2009). Imaging melamine in Egg samples by surface desorption atmospheric pressure chemical ionization tandem mass spectrometry
. Chinese Journal of Analytical Chemistry, 37(3), 315-318. 10.1016/S1872-2040(08)60088-2
For the first time, the characteristic fragment(m/z 85) of protonated melamine generated in MS/MS spectra recorded using surface desorption atmospheric pressure chemical ionization mass spectrometry has been employed as a molecular probe to image melamine distributed in boiled eggs. With a special resolution of 0.06 mm2, the imaging obtained in x, y dimensions visualized extremely uneven distribution of melamine in the egg samples(ca. 1244 mm2), and most melamine(99. 8%) was distributed in egg white region. The ratio of the unit sampling area to the imaging area achieved was less than 50 ppm.
